ما هو س؟ 1/2 (180-x) + (90-x) = 120

ما هو س؟ 1/2 (180-x) + (90-x) = 120
Anonim

إجابة:

#x = 40 #

تفسير:

# => 1/2 (180 - س) + (90 - س) = 120 #

# => 180/2 - س / 2 + 90 - س = 120 #

# => 90 - س / 2 + 90 - س = 120 #

# => 90 + 90 - س - س / 2 = 120 #

# => 180 - (3x) / 2 = 120 #

# => (3x) / 2 = 180 - 120 #

# => (3x) / 2 = 60 #

# => س = 2/3 × 60 #

#=> 40#